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Finding the Fourth Proportional to 3,018.50, 4,166.98 and 1,899.98

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Solution

The fourth proportional to 3,018.50, 4,166.98 and 1,899.98 is: 2,622.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.50 : 4,166.98 = 1,899.98 : x
  2. Step 2: Convert to fraction form
    3,018.50/4,166.98 = 1,899.98/x
  3. Step 3: Cross multiply
    3,018.50x = 4,166.98 × 1,899.98
  4. Step 4: Simplify right side
    3,018.50x = 7,917,153.08
  5. Step 5: Solve for x
    x = 7,917,153.08/3,018.50
  6. Step 6: Final answer
    x = 2,622.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.